568
CDUS41 KLWX 122135
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
435 PM EST FRI DEC 12 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 12 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 38 3:57 PM 72 1979 47 -9 45
MINIMUM 29 7:51 AM 9 1988 30 -1 25
AVERAGE 34 38 -4 35
PRECIPITATION (IN)
TODAY 0.00 0.95 1964 0.11 -0.11 0.00
MONTH TO DATE 0.78 1.37 -0.59 1.59
SINCE DEC 1 0.78 1.37 -0.59 1.59
SINCE JAN 1 29.66 41.31 -11.65 32.62
SNOWFALL (IN)
TODAY 0.0 10.6 1982 0.1 -0.1 0.0
MONTH TO DATE 1.3 0.9 0.4 T
SINCE DEC 1 1.3 0.9 0.4 T
SINCE JUL 1 1.3 1.2 0.1 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 31 27 4 30
MONTH TO DATE 380 303 77 332
SINCE DEC 1 380 303 77 332
SINCE JUL 1 1173 1203 -30 1000
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1330 1231 99 1586
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 7.8
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 51 5:00 AM
LOWEST 42 3:00 PM
AVERAGE 47
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 73 2015
MINIMUM TEMPERATURE (F) 29 7 1988
SUNRISE AND SUNSET
DECEMBER 12 2025......SUNRISE 7:19 AM EST SUNSET 4:48 PM EST
DECEMBER 13 2025......SUNRISE 7:20 AM EST SUNSET 4:48 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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